text: #ifndef RAY_H_INCLUDED
  #define RAY_H_INCLUDED
  
  #include "../Math/Vector.h"
  
  class Ray {
  public:
      const Vector3f origin;
      const Vector3f direction;
  
      Ray(const Vector3f& origin, const Vector3f& direction);
  };
  
  #endif // RAY_H_INCLUDED